Ok so the Outboard is a Victa.The AA basicly represents late/last of the model 5 series run and/or industrial/various NON mower applications like your outboard.The serial number would usually have just 5 digits following.The 4 is genrally on the lower half of the crankcase but things got stamped anywhere.The prefixes for these later engines can be A AA AAA AC and a couple of others as far as alternate fitments go.Ok so a really quick run down on serial numbers.We will start at the first Victa engine.Model 1 0-8,000 approx
model 2 8,000 to 100,000...model 2a 100,000-110,000...the next few models can intersect/overlap...(The model 3 and 4 were made at the same time)Model 3 125,000-200,000...Model 4 automatic/predicta only 110,000-130,000...model 4 special 130,000 to anyones guess!A little over the 300,000.(Ive not really seen many mowers with a number much over 300,000) most confusion with the model 4 is that only the first 20,000 are of the extremely rare category,Be wary if your buying one of these,if your not sure ASK :)Model 5 forgotton lols....200,000 to 300,000 should be accurate.The model 3 and 5 correct series ones often have the lower crank half stamped with 3 and 5 most other engines can have any other number on the lower crank half depending on where and what state they were manufactured.All numbers after this are as I said previoulsy VERY late runs of the model 5 usually series 2 and 3 and/or marine industrial and other applications.These numbers should be relatively accurate others will fill in any gaps or mistakes Ive made,but this should give you a rough idea of what came of what.As for later engine numbers,I know there are a few members who know these ones accurately.This is as far as I can take you:)...BTW wanna sell me a Sheerline???? Just kiddin! or AM I????? hahhahhaha.
Last edited by Bluegmhtmonaro; 11/03/12 04:52 PM.
